Use a carbon monoxide detector
Check the detector’s test button regularly
Replace detector batteries as needed
Follow the manufacturer’s instructions for installation and placement
Have fuel-burning appliances inspected by a qualified technician
Use a combustion analyzer for appliance testing
Test indoor air with a calibrated CO meter
Call emergency services if the detector alarms and symptoms are present
Evacuate the area if CO is suspected
Do not rely on smell or visibility to detect carbon monoxide